CVE-2023-6816

CVE-2023-6816CVE-2023-6816

x.org / x_server

Description

A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap overflow if a bigger value was used.

Scoring

CVSS 9.8 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Last modified2026-11-04
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.